EP0820908B1 - Gassack-Modul für ein Fahrzeuginsassen-Rückhaltesystem - Google Patents

Gassack-Modul für ein Fahrzeuginsassen-Rückhaltesystem Download PDF

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Publication number
EP0820908B1
EP0820908B1 EP97111298A EP97111298A EP0820908B1 EP 0820908 B1 EP0820908 B1 EP 0820908B1 EP 97111298 A EP97111298 A EP 97111298A EP 97111298 A EP97111298 A EP 97111298A EP 0820908 B1 EP0820908 B1 EP 0820908B1
Authority
EP
European Patent Office
Prior art keywords
gas bag
gas
holding part
wall
inflation opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97111298A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0820908A1 (de
Inventor
Jürgen Berger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRW Occupant Restraint Systems GmbH
Original Assignee
TRW Occupant Restraint Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRW Occupant Restraint Systems GmbH filed Critical TRW Occupant Restraint Systems GmbH
Publication of EP0820908A1 publication Critical patent/EP0820908A1/de
Application granted granted Critical
Publication of EP0820908B1 publication Critical patent/EP0820908B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2171—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23123—Heat protection panels

Definitions

  • the invention relates to an airbag module according to the preamble of Claim 1, as is known from DE-U-296 04 345.
  • the folded wall of the gas bag is usually opposite the injection opening, so that the incoming compressed gas directly onto the Wall hits.
  • a comparatively thick fabric can be used to damage the wall by the in the Compressed gas contained particles and the temperature of the compressed gas.
  • an additional piece of fabric can be used between the injection opening and the wall opposite this the gas bag is arranged so that the compressed gas is not directly on the Wall of the gas bag can hit.
  • US-A-4,178,017 and US-A-5,149,130 are gas bag modules known in which the gas generator is arranged inside the gas bag is.
  • spacers are on the gas generator provided in the form of flaps. This fold will be at the Activation of the gas generator bent outwards and prevent that the fabric of the gas bag touches the gas generator.
  • the features of the characterizing part of claim 1 are provided.
  • the provided according to the invention Protective flap protects the gas bag's opening opposite wall before a direct inflow with that of compressed gas provided to the gas generator. So there can be none Damage to the wall due to the inflowing compressed gas.
  • in the Contrary to conventional gas bag modules where the unfolding of the gas bag due to the action of the compressed gas flowing into it is initiated, in an airbag module according to the invention
  • the gas bag unfolds due to the mechanical effect of the opening protective flap initiated. After the protective flap has opened slightly, the compressed gas flows into the gas bag and unfolds it completely.
  • the protective flap is in one Position pivoted in which it is no longer the blowing opening opposite.
  • a tub-like holding part in the interior of the gas bag is arranged, the bottom of which surrounds the injection opening Wall of the gas bag arranged and with one with the injection opening coinciding passage is provided and the two opposite Has side parts, at least one of which with the Protective flap is provided.
  • the trough-like holding part forms together with the protective flap in connection with the injection opening standing channel, in the beginning of the unfolding process that of the Compressed gas supplied to gas generator flows. After a certain amount Compressed gas has flowed into the channel, the unfolding process for the gas bag simultaneously with the opening of the at least one protective flap initiated.
  • the bottom of the holding part protects the blowing opening of the gas bag surrounding wall from damage by the incoming compressed gas.
  • Two protective flaps are preferably provided, each on the free edge of the opposite side parts of the trough-like holding part are arranged. When using two Protective flaps can make each individual protective flap smaller so that it is easier to open.
  • the gas bag with the Holding part forms a pre-assembled assembly.
  • the Wall of the gas bag on the side facing away from the injection opening the protective flap or protective flaps be folded and by means of For example, a tearable film can be fixed.
  • the holding part has in addition to its function as a fastening element for the protective flaps also the function of the mounting frame that in conventional Gas bags is arranged inside and for the Connection of the gas bag to a gas generator or to its housing serves.
  • FIG. 1 is a schematic cross section of an inventive Airbag module 10 shown for a vehicle occupant restraint system.
  • This gas bag module consists essentially of one Airbag 16, which is provided with a holding part 20.
  • the gas bag module 10 is connected to a housing 14 (bolt 18) in which a Compressed gas source 12 is arranged. Instead of the bolts 18 can rivets or self-tapping screws can also be used. As well the use of clip connections is possible.
  • the housing 14 is with an injection opening (not visible in this section) of the Gas bags 16 in connection to the ignition of the gas generator 14 To pressurize the interior of the gas bag 16 with compressed gas.
  • the holding part 20 arranged in the interior of the gas bag 16 has one trough-like elongated shape (see also Fig. 2) and points a bottom 22 and two side parts 24, 26.
  • the bottom 22 is with provided with a passage 28 which is connected to the gas bag injection opening 16 coincides when the gas bag module 10 is fully assembled.
  • On the two side parts 24, 26 of the holding part 20 is one Protective flap 30 and 32 attached so that between the two Protective flaps 30, 32, the two side parts 24, 26 and the bottom 22 a channel for the through the injection opening 28 into the interior of the Gas bags 16 inflowing compressed gas is formed.
  • the holding part 20 can consist of plastic or another suitable material, and the protective flaps 30, 32 are integrally formed on the side parts. It is also possible to have the protective flaps as separate parts produce, which are then connected to the holding part.
  • On The protective flaps are on the free, opposite sides 30, 32 provided with a bent edge 33 so that none sharp edge can arise, which could damage the gas bag 16.
  • the holding part 20 together with the gas bag 16 can form an assembly be pre-assembled.
  • the openings 31 are formed in the bottom 22 of the holding part 20, the bolts 18 used. Together with these bolts, the holding part 20 in the inside of the gas bag 16 inserted so that the bolts 18 through passage openings formed in the wall of the gas bag extend therethrough, whereby the gas bag 16 relative to the holding part 20 is fixed.
  • the gas bag 16 is on the protective flaps 30, 32 folded and fixed by means of a film, for example, so that a preassembled assembly is formed, which on the housing 14th of the gas bag module 10 can be attached.
  • the mode of operation of the holding part is now 20 and the protective flaps 30, 32 when the gas bag 16 unfolds described.
  • the gas generator 12 After activation of the gas generator 12 flows from it Compressed gas provided via the injection opening and the passage 28 of the holding part 20 in the channel through the protective flaps 30, 32nd and the holding part 20 is formed.
  • the pressurized gas there is a even distribution of the pressurized gas inside the duct, though the injection opening is arranged eccentrically in the channel.
  • the protective flaps 30, 32 When a certain pressure inside the channel is reached the protective flaps 30, 32 opened, the on the protective flaps 30, 32 folded wall of the gas bag 16 pushed away from the gas generator 12 becomes. This begins the actual development process of the Airbag. 3, various intermediate stages of the Opening the protective flaps 30, 32 shown until they are opened in the direction of arrow A or B a fully open one Have reached position in which that supplied by the gas generator 12 Compressed gas can flow freely into the interior of the gas bag 16.
  • the Protective flaps 30, 32 are made in one piece with the side parts 24, 26, the pivoting movement through a hinge area 34 or 36 is facilitated, which is carried out with reduced wall thickness is.
  • FIG. 4 shows a variant of the holding part shown in FIG. 3 20 shown.
  • a single one Protective flap 40 is used, which is attached to the side part 26.
  • the Protective flap 40 is in the direction after activation of the gas generator 12 of arrow C is pivoted into the fully open position.
  • By using only one swivel flap it is special possible to influence the direction of deployment of the gas bag 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
EP97111298A 1996-07-23 1997-07-04 Gassack-Modul für ein Fahrzeuginsassen-Rückhaltesystem Expired - Lifetime EP0820908B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29612777U DE29612777U1 (de) 1996-07-23 1996-07-23 Gassack-Modul für ein Fahrzeuginsassen-Rückhaltesystem
DE29612777U 1996-07-23

Publications (2)

Publication Number Publication Date
EP0820908A1 EP0820908A1 (de) 1998-01-28
EP0820908B1 true EP0820908B1 (de) 2002-04-24

Family

ID=8026873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111298A Expired - Lifetime EP0820908B1 (de) 1996-07-23 1997-07-04 Gassack-Modul für ein Fahrzeuginsassen-Rückhaltesystem

Country Status (7)

Country Link
US (1) US5893578A (es)
EP (1) EP0820908B1 (es)
JP (1) JPH1059109A (es)
KR (1) KR980008866A (es)
CN (1) CN1171340A (es)
DE (2) DE29612777U1 (es)
ES (1) ES2113335T3 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626463B4 (de) * 1996-06-21 2005-07-07 Takata-Petri Ag Vorrichtung zur Beeinflussung des Einströmens des Gases in einen Gassack eines Airbagmoduls
FR2773120B1 (fr) * 1997-12-26 2000-02-25 Faure Bertrand Equipements Sa Siege de vehicule dote d'un sac de securite gonflable lateral
DE29800444U1 (de) * 1998-01-13 1998-04-23 Trw Automotive Safety Sys Gmbh Flammschutz für einen Gassack
DE29812800U1 (de) 1998-07-17 1998-11-19 TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf Gassackmodul für ein Fahrzeuginsassen-Rückhaltesystem
DE29922562U1 (de) 1999-12-22 2000-05-04 Trw Repa Gmbh Gassackmodul mit Gasführungseinrichtung
DE19962946A1 (de) * 1999-12-24 2001-07-12 Daimler Chrysler Ag Airbagmodul
DE29922988U1 (de) * 1999-12-30 2000-05-18 TRW Automotive Safety Systems GmbH & Co. KG, 63743 Aschaffenburg Gassackmodul-Abdeckung
US6336659B1 (en) * 2000-05-15 2002-01-08 Trw, Inc. Air bag module with inflator shield
DE20014064U1 (de) * 2000-08-16 2001-05-23 TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf Gassack-Modul
DE102004038459B4 (de) * 2004-08-07 2008-03-20 Autoliv Development Ab Airbagmodul zum Schutz eines Kraftfahrzeuginsassen
KR100757153B1 (ko) * 2005-12-12 2007-09-07 현대자동차주식회사 커튼에어백의 간섭을 방지하는 필러 램프 구조
CN104228753B (zh) * 2014-09-17 2016-04-20 成都衔石科技有限公司 跟驰汽车的安全气囊

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29604345U1 (de) * 1995-09-05 1996-07-18 Trw Occupant Restraint Systems Gmbh, 73551 Alfdorf Gassack-Rückhaltemodul

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178017A (en) * 1974-11-20 1979-12-11 Nissan Motor Company, Limited Safety bag inflation apparatus with extendible guard member against contact of bag with heated gas generator
US4944527A (en) * 1989-08-31 1990-07-31 Allied-Signal Inc. Integral retainer, heat shield and assembly
US5286054A (en) * 1989-12-04 1994-02-15 Talley Automotive Products, Inc. Aspirating/venting motor vehicle passenger airbag module
US5149130A (en) * 1991-05-28 1992-09-22 General Motors Corporation Liner for inflatable occupant restraint cushion
JPH06199202A (ja) * 1993-01-06 1994-07-19 Takata Kk インフレータ及び運転席用エアバッグ装置
DE4433014A1 (de) * 1993-09-17 1995-03-23 Volkswagen Ag Trägeranordnung zur Aufnahme und Halterung eines Gaskissens
JPH07291080A (ja) * 1994-04-27 1995-11-07 Ashimori Ind Co Ltd エアバッグ装置
US5556124A (en) * 1995-01-24 1996-09-17 Trw Vehicle Safety Systems Inc. Air bag module

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29604345U1 (de) * 1995-09-05 1996-07-18 Trw Occupant Restraint Systems Gmbh, 73551 Alfdorf Gassack-Rückhaltemodul

Also Published As

Publication number Publication date
ES2113335T1 (es) 1998-05-01
CN1171340A (zh) 1998-01-28
ES2113335T3 (es) 2002-12-01
KR980008866A (ko) 1998-04-30
US5893578A (en) 1999-04-13
JPH1059109A (ja) 1998-03-03
DE59707090D1 (de) 2002-05-29
DE29612777U1 (de) 1996-11-21
EP0820908A1 (de) 1998-01-28

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